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  <head>
    <meta charset="UTF-8" />
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    <title>Document</title>
    <style>
      .blue {
        background-color: blue;
      }
    </style>
  </head>
  <body>
    <div id="box" class="box">
      <div id="test">test</div>
      <div id="test2">test2</div>
    </div>
    <div id="empty">
      <div>1</div>
      <div>2</div>
      <div>3</div>
    </div>

    <script src="easy-dom.js"></script>
    <script src="main.js"></script>
  </body>
</html>
